package cn.fantasy.springcloud.service.impl;

import cn.fantasy.springcloud.service.PaymentService;
import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentServiceImpl implements PaymentService {

    /**
     * 正常访问肯定ok的方法
     * @param id
     * @return
     */
    @Override
    public String paymentInfo_OK(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + " paymentInfo_Ok, id: " + id + "\t" + "哈哈";
    }

    @Override
    @HystrixCommand(fallbackMethod = "paymentInfo_TImeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
    }) // 这个方法出问题了就调用注解里的方法,这个线程3秒算正常
    public String paymentInfo_TimeOut(Integer id) {
        int timeNumber = 5;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池: " + Thread.currentThread().getName() + " paymentInfo_TimeOut, id: " + id + "\t" + "哈哈,耗时"+ timeNumber +"秒钟";
    }

    @Override
    public String paymentInfo_TImeOutHandler(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + " paymentInfo_TImeOutHandler, id: " + id + "\t" + "哈哈";
    }

    // ====服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"), // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), // 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"), // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("....id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号:" + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能负数，请稍后再试，/TOT/" + id;
    }


}
